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Astrophysicist, (Postdoctoral Research Fellow) (IS-1330-11)

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Description


OPENING DATE: December 23, 2025

CLOSING DATE: January 23, 2026
TYPE OF POSITION: Trust Fund (Non-Federal), Temporary, not to exceed two years, with the possibility of extension for a third year.
LOCATION: Cambridge, MA
AREA OF CONSIDERATION: This position is open to all eligible candidates.

What are Trust Fund Positions?
Trust Fund positions are unique to the Smithsonian. They are paid for from a variety of sources, including the Smithsonian endowment, revenue from our business activities, donations, grants and contracts. Trust employees are not part of the civil service, nor does trust fund employment lead to Federal status. The salary ranges for trust positions are generally the same as for federal positions and in many cases trust and federal employees work side by side. Trust employees have their own benefit program, which may include Health, Dental & Vision Insurance, Life Insurance, Transit/Commuter Benefits, Accidental Death and Dismemberment Insurance, Annual and Sick Leave, Family Friendly Leave, 403b Retirement Plan, Discounts for Smithsonian Memberships, Museum Stores and Restaurants, Credit Union, Smithsonian Early Enrichment Center (Childcare), Flexible Spending Account (Health & Dependent Care).

Conditions of Employment
  • Pass Pre-employment Background Check and Subsequent Background Investigation, as required.
  • Complete a Probationary Period if applicable.
  • Maintain a Bank Account for Direct Deposit/Electronic Transfer.
  • The position is open to all candidates eligible to work in the United States. Proof of eligibility to work in U.S. is not required to apply.
  • Applicants must meet all qualification and eligibility requirements within 30 days of the closing date of this announcement.

OVERVIEW


INTRODUCTION
The Smithsonian Astrophysical Observatory (SAO) is at the forefront, internationally, of the scientific exploration of the universe. SAO combines its resources with those of the Harvard College Observatory to form the Harvard-Smithsonian Center for Astrophysics (CfA). The CfA is the best-known astrophysics center in the world. Its programs range from ground-based astronomy and astrophysics research to space-based research, the engineering and development of major scientific instrumentation for space launch and use in large ground-based facilities, and research designed to improve science education. The research objectives of SAO are carried out primarily with the support of Government and Smithsonian Institution funds, with additional philanthropic support. Government funds are in the form of Federal appropriations or the form of contracts and grants from other agencies. In contrast, Institution funds are available to SAO through grants from the Institution's Restricted Funds, Special Purpose Funds, Bureau Activities, Business Activities, and non-Federal contracts and grants.

SUMMARY
This is the position of Astrophysicist (Post-Doctoral Research Fellow) in the Radio and Geoastronomy Division. The purpose of the position is to conduct programs of scientific research and scholarship in two areas. One is to support the Event Horizon Telescope (EHT) and next-generation EHT (ngEHT) projects, which focus on analysis of high frequency VLBI data to probe event horizon scale structures and physics around supermassive black holes. The other is investigation into methods of detecting techno-signatures, potentially originating within the environments of supermassive black holes, through exploitation of archival EHT data.
Though these two scientific areas have distinct motivations and goals, they have in common high angular resolution techniques, black hole astrophysics, and statistical modeling and algorithm development for data analysis. We are particularly interested in candidates that have experience with these topics, as well as curiosity to apply them to novel applications. The incumbent is expected to devote the majority of their time to these areas. Candidates will also have opportunities to propose as a Principal Investigator for external support, host workshops, and visitors, participate in leadership opportunities, and receive mentoring and support from senior colleagues. Furthermore, they will be encouraged to establish mentoring relationships with CfA researchers and advise early career researchers. While there are no formal classroom teaching expectations, ample opportunities exist to engage in education and outreach activities across the Smithsonian, Harvard and Boston communities. As this position required analysis of EHT data, the incumbent will be nominated by SAO for membership in the EHT Collaboration, which is essentially assured.


MAJOR DUTIES



Duties
1. Conduct a program of research and scholarship that is broadly related to EHT/ngEHT science, engineering, or array enhancement; and to carry out a program of techno-signature modeling and detection. Both programs will be under the supervision and direction of the Principal Investigator (PI). It is anticipated that both programs will involve collaboration within SAO and with external groups.
2. Engage in the dissemination of the results of the research. For example, prepare papers for publication in scientific journals, and prepare and present findings at scientific meetings, as required.
3. Support, as required, the development of proposals for research funding.
4. Engage in the wider research and scholarly activities of the CfA.5. Mentor and assist undergraduate and graduate students in your area of research.
5. Mentor and assist undergraduate and graduate students in your area of research.


QUALIFICATION REQUIREMENTS


Basic Requirements:
A. Degree: in one or a combination of astronomy, physics, mathematics, space science, or electronics. The coursework must have included differential and integral calculus and 12 semester hours in astronomy and/or physics.
OR
B. Combination of education and experience - at least 30 semester hours of courses equivalent to a major in any combination of astronomy, space science, physics, mathematics, and electronics, with required course work as shown in A above, plus appropriate experience or additional education.
In addition to the basic requirements, candidates for the grade 11 must also possess one of the following:
A. Master's or equivalent graduate degree; or
B. Minimum of one-year specialized experience equivalent to at least grade 9 in the normal line of progression for this occupation. Specialized experience is experience that has equipped the applicant with the particular competencies/knowledge, skills, and abilities to successfully perform the duties of the position such as the duties listed above.
or
C. Combination of successfully completed graduate level education and experience equivalent to the above.
Knowledge, Skills, and Abilities required:
  • Knowledge of the technical methods, principles, and practices of the field of radio astrophysicsand/or very long baseline interferometry and/or black hole physics and/or modeling of techno-signatures and/or digital signal processing.
  • Ability to utilize computer technology in the solution of scientific problems.
  • Ability to perform scientific research, as may be evidenced by receipt of a Ph.D.
  • Ability to work effectively as part of a research group or scientific team
  • Ability to publish research results, as may be evidenced by prior publications.
Education completed outside the United States must be deemed equivalent to higher education programs of U.S. Institutions by an organization that specializes in the interpretation of foreign educational credentials. This documentation is the responsibility of the applicant and should be included as part of your application package.
Any false statement in your application may result in rejection of your application and may also result in termination after employment begins.
The Smithsonian Institution values and seeks a diverse workforce. Join us in "Inspiring Generations through Knowledge and Discovery."

Resumes should include a description of your paid and non-paid work experience that is related to this job; starting and ending dates of job (month and year); and average number of hours worked per week.

What To Expect Next: Once the vacancy announcement closes, a review of your resume will be compared against the qualification and experience requirements related to this job. After review of applicant resumes is complete, qualified candidates will be referred to the hiring manager.
Relocation expenses are not paid.

Commitment to Diversity, Equity, and Inclusion
The Smithsonian Institution provides reasonable accommodation to applicants with disabilities where appropriate. Applicants requiring reasonable accommodation should contact hr@cfa.harvard.edu. Determinations on requests for reasonable accommodation will be made on a case-by-case basis. To learn more, please review the Smithsonian’s Accommodation Procedures.
The Smithsonian Institution is an Equal Opportunity Employer. We believe that a workforce comprising a variety of educational, cultural, and experiential backgrounds support and enhance our daily work life and contribute to the richness of our exhibitions and programs. See Smithsonian EEO program information: https://www.si.edu/oeesd.

The Smithsonian Astrophysical Observatory is an equal opportunity employer committed to diversity in our workplace. Please visit the SAO website at http://www.cfa.harvard.edu/

About Smithsonian Astrophysical Observatory

The Smithsonian Astrophysical Observatory is joined by Harvard College Observatory to form the Center for Astrophysics | Harvard & Smithsonian. The Center is a collaboration between Harvard and Smithsonian designed to ask — and ultimately answer — humanity’s greatest unresolved questions about the nature of the universe. Founded in 1973, the Center for Astrophysics | Harvard & Smithsonian is an ongoing collaboration designed to foster innovation and propel discovery. Our mission is to advance knowledge of the Universe through research in astronomy and astrophysics and in related areas of fundamental physics and geophysics.

At the CfA, scientists in a broad range of disciplines study the universe at every scale, from every wavelength, and using telescopes and instruments that span and orbit the globe, all with a single purpose: making groundbreaking discoveries that advance human knowledge.

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